Fig. 4
From: Ultrastructural studies distinguish skin diversities among Galápagos iguanas
Alcian blue and PAS staining of skin samples from three Galápagos iguana species. (A-C) Alcian Blue stains. Skin samples were negative for the presence of acid mucins. (D-F) PAS stains. Skin samples were negative for the presence of polysaccharides. Representative images from black-colored skin of A.cristatus (A, D), non-black-colored (yellowish) skin of C. subcristatus (B, E) and non-black-colored (pink) skin of C. marthae (C, F). Scale bar = 100 μm